You can also avoid purchasing the Recharagable CR123A's shown in the pictures. There are too many fakes out there and the quality of them is terrible. Do not purchase ultrafire 18650 batteries despite their price. Materials needed are as follows: - Maglite 2D (local hardware store) - 3/4 inch diameter pvc coupling (local hardware store) - 3/4"x1/2" Reducer Coupling Copper (local hardware store) - Aspherical Lens - LED- Cree XM-L (Bin T6 or U2- I used U2) - LED Driver - Heat Sink - Arctic Silver Thermal Adhesive or similar item - Wire Stranded 22 AWG - O ring 50mm - small spring (salvage off of old/cheap flashlights) - insulation foam (2"x2") - 18650 Batteries - Panasonic or any reputable brand will work. Other Helpful Links (how I learned to build this): Candle Power Forums Budget Light Forums This modification can be done by a "beginner" with limited flashlight knowledge, soldering skills and a basic idea on how to utilize limited resources. There are other cheaper DIY alternatives and production flashlights that may give you the better deal (dollars to lumens), but if you love flashlights and DIY, then this project is right for you. This project will run you at about $50 not including batteries.
This Maglite Modification transforms the Maglite from a 19 lumen to a 900-1000 lumen monster! Many flashlight DIY'ers familiar with CPF (Candle Power Forums) may have already seen modifications similar to this, but most of the modifications on there use all web based parts, as this one uses "less" online ordering, and more localized hardware store items.
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